fig8
Figure 8. Schematic diagram of the preparation process of PVDF membrane and the polymer solution transformation during the cooling process. The suspension of PVDF and methyl lactate is heated from 25 °C to 95 °C. PVDF dissolves through hydrogen bond interactions to form a uniform solution; after cooling to 50 °C, a sol-gel transformation occurs[79]. Reproduced from Ref.[79] with permission from the Royal Society of Chemistry. PVDF: Polyvinylidene fluoride.
